1620 Geographos (1951 RA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3355121545 ± 2.00e+00
Semi-major axis (a)1.2457769668 AU ± 3.00e+00
Inclination (i)13.33577542° ± 4.00e+00
Long. of Asc. Node (Ω)337.14082621° ± 5.00e+00
Arg. of Perihelion (ω)277.01835526° ± 6.00e+00
Mean Anomaly (M)212.92032873° ± 2.36e-05
Mean Motion (n)0.7088458984°/day ± 2.56e+00
Perihelion dist (q)0.82780365 AU ± 3.19e+00
Aphelion dist (Q)1.66375028 AU ± 4.72e+00
Orbital Period1.39046623 yr ± 5.02e+00
NGA Modelr2
A23.55475120e-06 AU/d²
Physical Parameters
H (abs. magnitude)15.26
G (slope)0.15
Alternative Designations

1983 CY3

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.028806 AU
Observations Used9056
Radar Obs Used5
Gaia Obs Used104
Oppositions19
Arc Total1951-2017
First Observation Used1951-08-31
Last Observation Used2026-04-08
Observations (11927)
Date Type RA Dec Mag Band Observatory
2026-03-17 17:32:12 C 06 26 23.63 +26 35 05.0 X C40
2026-03-17 17:34:20 C 06 26 23.66 +26 35 02.7 X C40
2026-03-17 17:36:28 C 06 26 23.67 +26 35 00.7 X C40
2026-03-17 17:42:54 C 06 26 23.80 +26 34 54.0 X C40
2026-03-17 17:45:02 C 06 26 23.84 +26 34 51.3 X C40
2026-03-17 20:44:21 C 06 26 27.026 +26 31 47.57 Z C23
2026-03-17 20:54:16 C 06 26 27.173 +26 31 37.09 Z C23
2026-03-17 22:01:24 B 06 26 28.330 +26 30 34.99 X J51
2026-03-17 22:10:50 B 06 26 28.452 +26 30 25.06 X J51
2026-03-17 22:20:11 B 06 26 28.610 +26 30 15.55 X J51
2026-03-18 18:15:04 C 06 26 52.32 +26 09 58.7 X C40
2026-03-18 18:17:12 C 06 26 52.39 +26 09 56.9 X C40
2026-03-18 18:19:21 C 06 26 52.43 +26 09 54.8 X C40
2026-03-18 18:21:30 C 06 26 52.48 +26 09 52.4 X C40
2026-03-18 18:23:39 C 06 26 52.54 +26 09 50.1 X C40
2026-03-18 18:25:49 C 06 26 52.52 +26 09 48.1 X C40
2026-03-18 18:27:58 C 06 26 52.60 +26 09 45.7 X C40
2026-03-18 18:30:07 C 06 26 52.63 +26 09 43.6 X C40
2026-03-18 18:32:16 C 06 26 52.67 +26 09 41.2 X C40
2026-03-18 18:34:24 C 06 26 52.70 +26 09 39.0 X C40
2026-03-18 18:36:33 C 06 26 52.74 +26 09 36.7 X C40
2026-03-18 20:14:20 B 06 26 54.839 +26 07 56.17 W G34
2026-03-18 20:21:50 B 06 26 54.987 +26 07 48.34 W G34
2026-03-18 20:33:06 B 06 26 55.133 +26 07 37.66 W G34
2026-03-20 19:50:03 B 06 28 00.696 +25 19 59.09 X Y84
2026-03-20 19:54:42 B 06 28 00.782 +25 19 53.69 X Y84
2026-03-20 19:57:24 B 06 28 00.862 +25 19 50.45 X Y84
2026-03-20 20:39:59 C 06 28 01.730 +25 19 06.92 Z C23
2026-03-20 21:17:09 C 06 28 02.544 +25 18 28.94 Z C23
2026-03-21 19:54:02 B 06 28 38.371 +24 55 50.74 X Y84
2026-03-21 19:56:46 B 06 28 38.426 +24 55 48.00 X Y84
2026-03-21 19:59:29 B 06 28 38.496 +24 55 45.19 X Y84
2026-03-22 20:02:15 C 06 29 18.52 +24 31 42.8 X C40
2026-03-22 20:04:12 C 06 29 18.61 +24 31 41.6 X C40
2026-03-22 20:06:01 C 06 29 18.65 +24 31 39.1 X C40
2026-03-22 20:07:44 C 06 29 18.72 +24 31 37.8 X C40
2026-03-22 20:11:10 C 06 29 18.78 +24 31 34.3 X C40
2026-03-22 20:51:40 C 06 29 20.280 +24 30 54.00 Z C23
2026-03-22 22:09:00 C 06 29 22.368 +24 29 35.88 Z C23
2026-03-28 05:57:46 C 06 33 42.646 +22 23 22.49 V T05
2026-03-28 06:02:31 C 06 33 42.794 +22 23 17.81 V T05
2026-03-28 06:09:51 C 06 33 43.030 +22 23 10.43 V T05
2026-03-28 06:28:53 C 06 33 43.682 +22 22 51.60 V T05
2026-03-28 07:00:21 C 06 33 44.762 +22 22 20.28 V T05
2026-03-28 07:01:39 C 06 33 44.760 +22 22 18.12 V T05
2026-03-28 07:07:41 C 06 33 44.993 +22 22 12.90 V T05
2026-03-28 07:09:44 C 06 33 45.086 +22 22 10.81 V T05
2026-03-28 07:24:58 C 06 33 45.631 +22 21 55.44 V T05
2026-03-28 07:26:20 C 06 33 45.665 +22 21 55.04 V T05
2026-03-28 21:28:20 B 06 34 18.422 +22 08 05.96 X J51
Radar Observations (12)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1983-02-27 05:00:00 161795 5 Hz 2380 -1 -1
1983-02-27.208333 16179500 500 Hz 2380 251 251
1983-02-28 05:04:00 142007628 30 us 2380 -1 -1
1983-02-28.211111 14200762800 30000 us 2380 251 251
1994-08-28 07:10:00 38936537.06 1.76 us 8510 -14 -14
1994-08-28 07:10:00 -364880.593 0.9 Hz 8510 -14 -14
1994-08-28.298611 3893653706 1760 us 8510 253 253
1994-08-29 04:40:00 42596456.4 1.13 us 8510 -14 -14
1994-08-29 04:40:00 -427851.027 0.2 Hz 8510 -14 -14
1994-08-29.194444 4259645640 1130 us 8510 253 253
1994-09-02 07:20:00 -615553.2 0.5 Hz 8510 -14 -14
1994-09-02.305556 -61555320 50 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)